With one of her brusque movements Lenox drew forward a chair and sat down on it, her elbows on the table and her face supported by her hands. Sitting thus, she looked directly across the table at Poirot.

“What have they got to go on?” she demanded. “Motive, I suppose. Probably came into money at her death.”

“He came into two million.”

“And if she had not died he would have been ruined?”

“Yes.”

“But there must have been more than that,” persisted Lenox. “He travelled by the same train, I know, but⁠—that would not be enough to go on by itself.”

“A cigarette case with the letter ‘K’ on it which did not belong to Mrs. Kettering was found in her carriage, and he was seen by two people entering and leaving the compartment just before the train got into Lyons.”